I find amazing that some, who reject the the tenets of the Nicene Creed, in whole or in part, claim that the Canon of Scripture is independent of it. The Nicene Creed was issued in 325 AD. The earliest extant list of the books of the NT, in exactly the number and order in which we presently have them, wasn't written until until 42 years later when it was done by Athanasius, Bishop of Alexandria, in his Easter letter of 367 AD.
The Nicene Creed is significant because was used as the standard of orthodoxy for the selection of which of the contemporaneous writings not selected for inclusion in the Bible. Additionally, the Council of Nicene issue a number of canons or rules governing the Church that are hotly contested on these threads daily. These include priestly celibacy, the legitimacy of the traditions of the Church and Paulianist heretic.
Scripture was written when the apostles were still alive, not three centuries later.
Peter even recognized that Paul’s writings were Scripture while he and Paul were alive.
Scripture was preserved by God, not some council of men. It was preserved in spite of any decisions of men, not because of them.
So, just how does canon and creed work, again? 300 years after the facts is a long time for corruption of the word to set in and become doctrine. Thank God He preserved His word as He promised He would.